Hans Strassl

Hans Strassl , also Hans Straßl , (born January 10, 1907 in Rauischholzhausen ; † July 8, 1996 ) was a German astronomer and director of the Astronomical Institute of the University of Münster .

life and work

Hans Strassl was born in Rauischholzhausen near Marburg . After graduating from high school in Fulda , he studied mathematics and physics at the Universities of Marburg and Göttingen , where he also took astronomy . In 1928 he passed the diploma examination for insurance experts (mathematical class). In 1932 he received his doctorate in Göttingen with Hans Kienle as part of the “Spectrophotometric Investigations” project with a thesis on the spectra of the Pleiades . These measurements were among the first to enable an exact determination of the surface temperature of stars .

Strassl stayed at the university until 1937, where he was denied a career because of his political views. From 1937 to 1945 he worked at the aerodynamic research institute in Göttingen in the field of flow theory and high-speed experiments.

In 1945 he returned to the University, where he in 1948 with a contribution to Nomographie habilitated . In this area, Strassl became an international authority. In 1948 he became an observer at the University of Bonn . In the 1950s, he helped build the university's radio telescope : he created the nomograms for the telescope control.

In 1958 he became associate professor , in 1964 full professor at the University of Münster and first director of the Astronomical Institute. In this role he supervised 12 dissertations.

Strassl was a board member of the Astronomical Society and co-editor of the magazine " Die Sterne ".

Strassl was a knight of the papal order of Gregorius .

Fonts

• The intensity distribution in the spectra of the brighter Pleiades stars. Dissertation Göttingen 1932.
• (with Otto Heckmann ): On the dynamics of the star system. Publications of the Göttingen University Observatory No. 41, 43, 1934/1935.
• (with Hans Kienle, Johann Wempe ): The relative energy distribution in the continuous spectrum of 36 fundamental stars. Göttingen University Observatory, 1938.
• Nomograms for solving Kepler's equation. Communications from the Göttingen University Observatory No. 3, 1950. (Habil. Writing).
• (with Friedrich Becker ): Ultra-short wave radiation from space. West German publishing house Cologne, Opladen 1954.
• (with Martin Sauer): Nomograms for solving astronomical problems. Episode 4. Intensities. Size classes. Intensity logarithms. Dümmler Bonn, 1957.
• Azimuth nomograms for all hour angles and declinations in the geographical latitude range from −80 ° to + 80 ° . West German publishing house Cologne, Opladen 1959.

literature

• Waltraut C. Seitter , Albert Bruch: Hans Straßl † (1907–1996). In: Mitteilungen der Astronomische Gesellschaft No. 80 (1997), pp. 15-17.

Web links

• Publications by Hans Strassl in the Astrophysics Data System (input: Hans Strassl)